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Morphology > Flower > Flashcards

Flower Flashcards

1
Q

Inflorescence

A

Racemose- centripetal, acropetal (youngest at top)
Mustard, pea, wheat, sunflower

Cyamose- centrifugal, basipetal
Solanum, Bougainvillea, Dianthus, Euphorbia

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2
Q

Dichlamydeous flower

A

Both K and C present

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3
Q

Monochlamydeous flower

A

Liliaceae

Poaceae

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4
Q

Monoecious

A

Unisexual flowers separately on same plant

Maize
Coconut
Cucurbits

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5
Q

Dioecious

A

Unisexual flowers on different plants

Datepalm
Papaya
Mulberry

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6
Q

Symmetry of flowers

A

Actinomorphic- radial symmetry
Solanaceae, Liliaceae
Mustard, Datura, chilli, China rose

Zygomorphic - bilateral symmetru
Fabaceae
Pea, gulmohar, bean, Cassia

Asymmetric
Canna

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7
Q

Position of K, C, A

A

Hypogynous - superior ovary
Liliaceae, Solanaceae
China rose, mustard, brinjal

Perigynous - half superior, half inferior ovary
Rose, plum, peach

Epigynous - inferior ovary
Apple, pear, guava, watermelon, pomegranate, pumpkin, cucumber, bitter gourd, ray florets of sunflower

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8
Q

Pappus

A

In Asteraceae (sunflower family), sepal modified as hair like structure Pappus for seed or fruit dispersal

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9
Q

Floral appendages

A

Trimerous - Liliaceae
Tetramerous- Brassicaceae
Pentamerous - Solanaceae

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10
Q

Petal arrangement

A

Brassicaceae - Cruciform corolla

Fabaceae - Butterfly or Papillionaceous corolla

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11
Q

Aestivation

A

Valvate- sepals or petals just touch each other
Solanaceae, Liliaceae
Calotropis

Twisted or contorted- one margin overlapping, other being overlapped
Malvaceae
China rose, cotton, ladies finger

Imbricate- one completely internal or external, and one partially rxternal and internal
Cassia, gulmohar, sepals of Fabacaceae

Vaxillary or papillionaceous
Largest posterior, lateral free, anterior fused
Petals of Fabacaceae

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12
Q

Lobes of anther

A

Bilobed - Solanaceae, Brassicaceae, Fabacaceae

Monolobed/bisporangiate - Malvaceae

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13
Q

Staminode

A

Sterile stamen

Caeselpinia

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14
Q

Free stamen

A

Polyandrous

Brassica

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15
Q

Adhesion of stamen

A

Epipetalous - with petal
Solanaceae

Epiphyllous/Epitepalous- with oerianth or tepal
Liliaceae

Episepalous - with sepal
Verbena

Gynandrous - carpel
Calotropis, orchids

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16
Q

Cohesion of stamen

A

Monoadelphous - single bundle
Malvaceae

Diadelphous - two bundles
Fabaceae

Polyadelphous - many bundles
Rufaceae (citrus)

Anthers fused, filaments free - syngensious
Asteraceae

Anthers and filaments fused to form tube like structure - synandrous
Cucurbits, gourd

17
Q

Variation in length of stamen

A

Salvia

Brassica (Tetradynamous)

18
Q

One carpel

A

Monocarpellary

Fabaceae
Poaceae

19
Q

Many carpels

A

Apocarpous - free carpels
Rose, lotus

Syncarpous- carpels fused
Tomato, lily

20
Q

Placentation

A 
Marginal - Fabaceae (pea)
Axile - Tomato, lemon, cotton, lily
Free central- Dianthus, primrose
Parietal- cucumber, argemone, Brassica
Basal- wheat, sunflower

Morphology (5 decks)

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